<template>
  <div class="comment">
    <div class="addcomment" v-show='!isFocus'>
      <input type="text" placeholder="写跟帖" @focus="handlerFocus" />
      <span class="comment" @click="$router.push({path: '/comments/' + post.id})">
        <i class="iconfont iconpinglun-"></i>
        <em>{{post.comment_length}}</em>
      </span>
      <i class="iconfont iconshoucang" @click="starArticle" :class="{active:post.has_star}"></i>
      <i class="iconfont iconfenxiang"></i>
    </div>
    <div class="inputcomment" v-show='isFocus'>
        <textarea  ref='commtext' rows="5" ></textarea>
        <div>
            <span @click="sendComment">发 送</span>
            <span @click="cancelCommet">取 消</span>
        </div>
    </div>
  </div>
</template>

<script>
import {post_star,replyComment} from '@/apis/article.js'
export default {
  // props:['post'], 
  props:{
    post:{
      required:true
    },
    obj:{
      default:null
    }
  },
  watch: {
    obj(){
      console.log(this.obj);
      // 弹出输入框
      if(this.obj){
        this.isFocus = true
        setTimeout(() => {
        this.$refs.commtext.focus() 
        }, 10);
      }
    }
  },
  data () {
    return {
      isFocus: false
    }
  },
  methods: {
    // 取消评论
    cancelCommet(){
      // 让输入框隐藏
      this.isFocus = false
      // 重置obj为null
      this.$emit('resetObj')
    },
    // 发表评论
    async sendComment(){
      let id = this.$route.params.id
      let data = {
        content:this.$refs.commtext.value
      }
      if(this.obj){
        data.parent_id = this.obj.id
      }
      if (data.content.trim().length==0){
        this.$toast.success('请输入评论内容')
        return
      }
      let res = await replyComment(id ,data)
      this.$toast.success(res.data.message)
      this.$refs.commtext.value =  ''
      this.isFocus = false
      // 发出事件，让父组件进行评论列表数据的刷新
      this.$emit('refresh')
      console.log(res);
    },
    // 收藏文章
    async starArticle(){
      let res = await post_star(this.post.id)
      console.log(res);
      this.post.has_star = !this.post.has_star
      this.$toast.success(res.data.message)
    },
    //   获取焦点时触发
    handlerFocus () {
      this.isFocus = !this.isFocus
      setTimeout(() => {
      this.$refs.commtext.focus() 
      }, 10);
    }
  }
}
</script>

<style lang='less' scoped>
.comment{
    width: 100vw;
    position: fixed;
    left: 0;
    bottom: 0;
}
.inputcomment{
    padding: 10px;
    box-sizing: border-box;
    width: 100%;
    display: flex;
    background-color: #fff;
    align-items: flex-end;
    textarea{
        flex: 3;
        background-color: #eee;
        border:none;
        border-radius: 10px;
        padding: 10px;
    }
    div{
        padding: 20px;
    }
    span {
        display: block;
        flex: 1;
        height: 24px;
        line-height: 24px;
        padding: 0 10px;
        background-color: #f00;
        color:#fff;
        text-align: center;
        border-radius: 6px;
        font-size: 13px;
    }
}
.addcomment {
  width: 100%;
  box-sizing: border-box;
  padding: 10px;
  margin-top: 20px;
  display: flex;
  text-align: center;
  background-color: #FFF;
  position: absolute;
  bottom: 0;
  left: 0;
  > input {
    flex: 4;
    height: 30px;
    line-height: 30px;
    border-radius: 15px;
    border: none;
    background-color: #eee;
    padding-left: 20px;
    font-size: 14px;
  }
  i {
    font-size: 20px;
  }
  > span {
    flex: 1;
    position: relative;
    > em {
      position: absolute;
      right: 0;
      top: -5px;
      font-size: 10px;
      background-color: #f00;
      color: #fff;
      border-radius: 5px;
      padding: 3px 5px;
    }
  }
  > i {
    flex: 1;
  }
  .iconshoucang{
    &.active{
      color: red;
    }
  }
}
</style>
